Improvement in portable crabs for mole-plows



E. THORN.

Mole Plow.

Patented Oct. 18,1859.

Witnesses= 6. f/. %k W Inventor,

UNITED STATES PATENT OFFICE.

ELIJAH THORN, OF SELMA, OHIO.

IMPROVEMENT IN PORTABLE CRABS FOR MOLE-PLOWS.

Specification forming part of Letters Patent No. 25,855, dated October18, 1859.

To all whom it may concern:

Be it known that I, ELIJAH Tnonn, of Selma, in the county of Clarke andState of Ohio, have invented certain new and useful 1m provements inModes of Elevating, Moving, and Setting Machines for OperatingMolePlows; and I do hereby declare the following to be a full, clear,and exact description of the same, referencebeing had to the accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in elevating and changing thedirection of the machine by such devices as will be hereinafter fullyset forth.

To enable others skilled in the art to'make and use my invention, I willnow describe its construction and operation.

In the drawings, Figure l is a perspective of the machine complete andready for use. Fig. 2 is a perspective of the trucks. Fig. 3 representsthe boxes, the advantage of which will be more fully seen hereinafter.

In Fig. 1, A represents the frame, which is constructed in a substantialmanner.

It 70 are grabs firmly secured to frame A, with their lower endsinclined to the rear end of the machine, as fully shown in the drawings.

I represents the axle, on which are placed the wheels J J. Said axle ishinged in frontto the side of the frame A in such a manner that the axlecan roll from under said frame and permit it to rest upon grabs 7c k, asshown in Fig. 1. This-is eii'ected by means of two pieces of metal, I)1), extending up perpendicularly through the axle on each side of thesides of the frame, and a bolt passing from one to the other throughsaid sides.

B represents the tongue, which is secured to axle I.

d d are two braces or supports, which are secured to tongue 13 andbolted to pieces I) b.

F represents a frame, in the center of which is located the truck G.

H H are small rollers, which are placed at each end of the cross pieceof frame F, as fully shown in Fig. 2.

g g are supports, which are secured to the upper side of frame F, andbolted by means of screws passing through the centers of the rollers.Said screws also afford axles for the rollers H H, and are secured bymeans of nuts, as shown in Fig. 2. On each side of the truck G, and onthe under side of the cross-piece of frameF, are two hooks, h h, one ofwhich may be seen in Fig. 1. To these hooks are attached two chains, theopposite ends of which are secured to a cross-piece on frame A, as fullyrepresented in Fig. 1.

a a are two boxes or pieces of metal, which The operation of my machineis as follows:

The grabs 7a 70 being embedded in the earth, and it. becoming necessaryto remove the machine, the frame F is placed under the rear end, as seenin Fig. 1, the tongue of frame F being in an elevated position andconnected with the tongue 13 by a chain. Power is then applied at tongueB, which simultaneously rolls the axle I under the front end of themachine and pulls the tongue of frame F down, thus elevating the frontand rear end of the machine at the same moment, which may then be rolledto any desired locality.

The machine may be easily guided by moving the tongue of frame F to theright or left. My invention is designed to be used in connection with aditching-plow.

The ordinary reel or capstan is employed in the usual manner.

The frame F answers a double purpose. It not only serves to raise therear of the machine from the ground after it has been embedded, but itserves to guide the rear of the machine for the purpose of keeping it inline with the plow. It is often very necessary to move the rear of themachine a little to one side or the other, and without this arrangementit would be a verydiflicult matter to do it without moving and turningthe whole machine, which would occupy much time and be a great deal oftrouble.

Having thus fully described my invention, what I claim, and desire tosecure by Letters Patent, isl The arrangement of the frame F, asconstructed, with the boxes at a, which are attached to the rear of theframe A, and with the axle I and wheels J J, the several parts beingconnected together and used not only for elevating the machine, but forguiding its rear and changing its position, substantially as set forth.

Witnesses:

0. W. FRANZONI, '1. H. ALEXANDER.

ELIJAH moan.

